$(".change-content").click(function(){
	for(var i = 0;i<$(".detail-info").length;i++){
		var ele = $(".detail-info").eq(i);
		if(ele.css("display") == "block"){
			ele.hide();
		}
		else if(ele.css("display") == "none"){
			ele.fadeIn(1000);
		}
	}
})

	$(function(){
		$("nav>ul>li").mouseenter(function(){
			$(this).children("div").show();
		});
		$("nav>ul>li").mouseleave(function(){
			$(this).children("div").hide();
		});
		var canvas = document.getElementById('canvas'),

		ctx = canvas.getContext('2d'),
		w = canvas.width = window.innerWidth,
		h = canvas.height = $(document.body).height()+50,


		hue = 217,
		stars = [],
		count = 0,
		maxStars = 1200;
		console.log(h);
		var canvas2 = document.createElement('canvas'),
		ctx2 = canvas2.getContext('2d');
		canvas2.width = 100;
		canvas2.height = 100;
		var half = canvas2.width / 2,
		gradient2 = ctx2.createRadialGradient(half, half, 0, half, half, half);
		gradient2.addColorStop(0.025, '#fff');
		gradient2.addColorStop(0.1, 'hsl(' + hue + ', 61%, 33%)');
		gradient2.addColorStop(0.25, 'hsl(' + hue + ', 64%, 6%)');
		gradient2.addColorStop(1, 'transparent');

		ctx2.fillStyle = gradient2;
		ctx2.beginPath();
		ctx2.arc(half, half, half, 0, Math.PI * 2);
		ctx2.fill();

// End cache

function random(min, max) {
	if (arguments.length < 2) {
		max = min;
		min = 0;
	}

	if (min > max) {
		var hold = max;
		max = min;
		min = hold;
	}

	return Math.floor(Math.random() * (max - min + 1)) + min;
}

function maxOrbit(x, y) {
	var max = Math.max(x, y),
	diameter = Math.round(Math.sqrt(max * max + max * max));
	return diameter / 2;
}

var Star = function() {

	this.orbitRadius = random(maxOrbit(w, h));
	this.radius = random(60, this.orbitRadius) / 12;
	this.orbitX = w / 2;
	this.orbitY = h / 2;
	this.timePassed = random(0, maxStars);
	this.speed = random(this.orbitRadius) / 900000;
	this.alpha = random(2, 10) / 10;

	count++;
	stars[count] = this;
}

Star.prototype.draw = function() {
	var x = Math.sin(this.timePassed) * this.orbitRadius + this.orbitX,
	y = Math.cos(this.timePassed) * this.orbitRadius + this.orbitY,
	twinkle = random(10);

	if (twinkle === 1 && this.alpha > 0) {
		this.alpha -= 0.05;
	} else if (twinkle === 2 && this.alpha < 1) {
		this.alpha += 0.05;
	}

	ctx.globalAlpha = this.alpha;
	ctx.drawImage(canvas2, x - this.radius / 2, y - this.radius / 2, this.radius, this.radius);
	this.timePassed += this.speed;
}

for (var i = 0; i < maxStars; i++) {
	new Star();
}

function animation() {
	ctx.globalCompositeOperation = 'source-over';
	ctx.globalAlpha = 0.8;
	ctx.fillStyle = 'hsla(' + hue + ', 64%, 6%, 1)';
	ctx.fillRect(0, 0, w, h)

	ctx.globalCompositeOperation = 'lighter';
	for (var i = 1, l = stars.length; i < l; i++) {
		stars[i].draw();
	};

	window.requestAnimationFrame(animation);
}

animation();
})

	<!-- 轮播 -->
	$(document).ready(function(){
		$(".gw_zzsc li").css("width",$("body").width()+"px");
		$(".gw_zzsc li").css("cursor","pointer");
		$(".gw_zzsc ul").css("width","999999px");
		var str = "";
		for(i=0;i<$(".fix_flash li").length;i++){
			str += "<div class='gw_zzsc_sele' number="+i+" onclick='GW_FIX_scroll(this)'></div>"
		}
		$(".gw_zzsc_center").css("left",$("body").width()*0.5+250+"px")
		$(".gw_zzsc_flash_s").html(str);
		$(".gw_zzsc_sele").eq(0).addClass("gw_zzsc_over");
		//判断显示哪个DC
		var circleNumber = $(".gw_zzsc_over").attr('number');
		console.log(circleNumber);
		$(".gw_zzsc_over").on("change",circleNumber,function(){
			console.log(circleNumber);
			if (circleNumber==0) {
				$("#circle2").hide()
				$("#circle1").fadeIn();
			}else {
				$("#circle1").hide()
				$("#circle2").fadeIn();
			}
		})
	})
